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' 1C a? i O INVENTOR fiawarcl WaYtfiP \f/LTWJM ATTORNEY Patented May 17, 1932 UNITED STATES PATENT QFFICE EDWARD C. WALTER, OF ORANGE, NEW JERSEY, ASSIGNOR T MONROE GALCULA'IING- MACHINE COMPANY, OF ORANGE, NEW JERSEY, A CORPORATION 015 DELAWARE CALGULATING MACHIN E Application filed. October 27, 1930. Serial No. 491,373.

The invention relates to calculating machines and more particularly to means for shifting the product register of such a ma chine to the next decimal position at the completion of each multiplier figure operation.

The invention comprises means whereby the shift may be made selectively to a higher or to a lower decimal position without the employment of devices preset by the operm ator. to determine the direction of the shift.

The invention consists in the novel construc tion and combination of parts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention,

Fi 1 is a plan view of a calculating machine constructed in accordance with the invention;

Fig. 2 is a partial front elevation of the same, with the casing removed;

Fig. 3 is a partial plan view of the multiplier mechanism;

Fig. 1 is a left side elevation of the machine, with the casing broken away and parts of the multiplier mechanism removed;

Fig. 5 is a detail front elevation of a portion of the carriage shifting means;

Fig. 6 is a detail plan view of the carriage shifting clutches and associated parts;

Fig. 7 is a detail right side elevation of certain of the actuator stop and lock control devices;

Fig. 8 is a detail right side elevation of the shift clutch latch and associated parts;

:5 Fig. 9 is a front elevation of a modified arrangement of the multiplier keys;

Fig. 10 is a detail front elevation of a modified form of interlocking means between the right shift and left shift multiplier keys.

In these drawings the invention is shown as applied to a Monroe calculating machine, disclosed in its essential elements in the pat ent issued to George 0. Chase on December 22, 1925, #1,566,650 as supplemented by the disclosures ofthe Chase application Serial No. 159,155, filed January 5, 1927 and the Enders application Serial No. 213,570, filed August 17, 1927.

Muitiplier mechanism According to the above-named disclosures and as shown in the-accompanying drawings, multiplier keys or plungers 261 are adapted to engage the graded teeth of a slide 252, mounted upon a bail 250, and by rocking said bail, to interlock the depressed plunger 261 with the tooth of slide 252, so that the plunger is held depressed and bail 250 is held out of its normal position (Figs. 2 and 3). When rocked by a key 261 an arm 321 of bail 250 will operate a releasing lever 134 having a link connection with a lever 200, normally serving to lock the product register actuators of the machine against moving (Fig. 7). Booking of bail 250 by the multiplier plun er will also engage a clutch between the pro uct register actuators, mounted upon shaft 4: of the machine, and an electric motor, to initiate the registration of the product.

This clutch engaging mechanism may be of any well known form and is not illustrated in the accompanying drawings. Forms of such clutch engaging mechanism are disclosed in U. S. Patent #1,685,074, and in application Serial No. 213,570 hereinbeforc referred to. The rocking of. bail 250 will also engage one of the carriage shifting clutch members 62 or 63 (Fig. 6), as hereafter more fully described.

At each cycle of operation of the actuating mechanism slide 252 will be moved forwardly, step by step, in the well known manner, until the teeth of the slide are disengaged from the plunger 261, whereupon bail 250 will be restored to normal position by a suitable spring, and arm 321 of the bail will allow lever 134: to resume its normal position, bringing a releasing pawl 186 into engagement with trigger 31 to release an actuator stopping pawl 25 (Figs. and 7 Pawl 25, which is mounted on a rock arm 24, will now drop into engagement with a shoulder of rock arm 22, having link connection 21 with shaft 4. Thus arm 24, being connected to the driven mechanism of the machine, will be carried forwardly against a fixed stop 29, to limit the movement of the'actuators, an extension 144 of arm 24 acting to release the main clutch, as disclosed in Patent 1,566,650. Upon rebound of the parts, lock lever 200 will drop in front of link 21, to locate the actuators in full cycle position.

This stopping movement of arm 24 is utilized to shift the register carriage by means of a train of mechanism 47, 52, 54 and 55. operating the shift cams 59 and 60, one of which cams will operate carriage shifting Shaft 46, provided with crank pins engaging a rack in the foward edge of the carriage (Figs. 4 and 5).

A zero multiplier plunger is also provided, which operates bail 250vprecisely as it is operated by the other multiplier plungers 261, said zero multiplier plunger also operating through a lever train 342, 344 and 346 to trip trigger 31 upon the depression of such plunger, this action serving to stop the actuators before any registering operation thereof has been performed. Therefore, upon depression of the zero multiplier plunger, the actuators will be rotated through an idle zone of movement, and arm 24 will be carried against stop 29 to transmit the carriage shifting impulse.

Right and left carriage shift The direction in which register carriage 2 is shifted upon the conclusion of a multiplier figure operation will be determined by the adjustment of shift clutch members 62 and 63, these members forming the hubs of shifting cams 59 and 60 respectively. The adjustment of the clutches is determined by the depression of right hand shift multiplier keys 368 and left hand shift multiplier keys 369, these keys being arranged in two rows, and preferably numbered from 0 to 9 in accord- Y ance with the multiplier digits which they represent. In the principal form of the invention. keys 368 and 369 are shown as mounted at the right hand side of the keyboard,

and are adapted to operate cross-over mechanism 370. (Fig. 2) which the movement of a key is transmitted to a corresponding multiplier plunger 261. This is the only operating connection of the right hand shift keys 368, the right hand shifting clutch 62 being operated by engagement of bail 250 with levers 339 and 301, lever 301 being rocked about its fulcrum and transmitting the movement to pawl 371, mounted upon shipper arm 65, engaging the clutches 62 and 63, the movement serving to bring clutch 62 into engagement with complementary clutch teeth 61 upon shaft 46 (Fig. 7).

Multiplier plunger 261 is released during the last operative cycle of the actuators and before the carriage shifting impulse occurs, and. in order to retain the right hand shifting clutch in operative position, a latch 340 is provided engaging lever 301 and holding it as set by bail 250 and lever 339.

Lever 301 being held in adjusted position until the transmission of the shifting impulse is assured, will be released from latch 340 by the action of arm 24 (Fig. 8), whereupon shipper arm will Be held in neutral or non-clutching position by means of a spring acting to hold said arm with the pawl 371 thereof in contact with lever 301.

Each left hand shift multiplier key 369 acts upon its multiplier plunger 261 in precisely the same manner as said plunger is operated upon by the related right hand shift key 368, but in addition to this operation each key 369 operates additional mechanism which will neutralize the action of the parts controlling the positioning of the shifting clutch 62, and will bring the shifting clutch 63 into engagement with related clutch teeth 61 on shaft 46. This means comprises a lever 372 connected to a slide 373 upon which is mounted a pawl 374 adapted in the depression of a key 369 to engage pawl 371 and move the same out of contact with lever 301. Pawl 371 having escaped from lever 301, shipper arm 65 will be drawn 'rearwardly clutch 63 will remain stationary, and the clutch teeth 61 of the shaft will ratchet over the teeth of member 63, whereby clutch member 63 and shipper arm 65 will be restored substantially to neutral position. This al-- lows pawl 371 to act upon a cam surface 375 of lever 301 to complete the return of the shipper to neutral position. This returning movement will be allowed eyen if the key 369 is held depressed by the operator, since pawl 374 releases pawl 371 during the extreme movement of slide 373.

If desired, the right shift and left shift multiplier keys may be located at the left hand side of the keyboard, directly adjacent to the plungers 261, as shown in Fig. 9. l The mechanism here is the same as that previously described except that each pair of keys contacts directly with the related plunger 261, by means of a lug 376, and that the left hand shift key operates a lever 377, directly contacting with a lug 378 of slide 373.

In the principal form of the invention a aeee eoo pivoted interlocking member 379 is provid= ed between each pair of keys 368, 369, said member being movable into a notch of one key stem upon depression of the related key. An alternative construction is illustrated in Fig. 10, wherein a pivoted member 380 is moved by contact of a pin 381 projecting from one of the keys into contact with a similar pin projecting from the related key,

Claims:

1. In a calculating machine having a product register carriage and multiplier mechanism', including means settable. to determine the extent of a plural cycle registering operation and cooperating carriage shifting means operable at the conclusion of said operation; means including members common to said registration determining and to said shifting means and settable selectively by the registration determining means to determine right-hand or left-hand shifting of said carriage,

2. In a calculating machine having a laterally shiftable product register carriage; multiplier mechanism including means settable to determine the extent of a plural cycle registering operation including two series of multiplier keys, mechanism operable by both sets of keys to determine the extent of the registering operation, mechanism normally operable to shift the carriage in a given direction at the conclusion of a multiplier operation, and means operable by one of said sets of mutiplier'keys to reverse the direction of the carriage shift.

3. In a calculating machine having a laterally shiftable product register carriage and multiplier mechanism including means settable to determine the extent of a plural cycle registering operation; carriage shifting means automatically operable at the conclusion of said operation and including forward and reverse movement clutches, a shifting arm, common to said clutches, cooperating independently adjustable contacting elements one of which is mounted on said shifting arm, and means for selectively ad'usting said elements to vary the position 0 the shifting arm.

Si ned at Orange in the county of Essex and tate ofNew Jersey this 24 day of October A. D. 1930.

EDWARD C. WALTER. 

